Weather Almanac: Reliance, WY 82943

🗓️ Historical norms for September 2026

September avg. precipitation
🌧️ 1.08"
September days below freezing
📉 ≈0.9 days
Average September lows ≈42.3°F
USDA Zone
5a
Annual extreme lows -20°F to -15°F
Last Spring Frost (36°F)
🌷 Always
First Fall Frost (36°F)
🍂 Always
Tue. September 1  

🌅 6:42 a.m.

H: ≈80.1°F

L: ≈47.3°F

🌇 7:49 p.m.

Wed. September 2  

🌅 6:43 a.m.

H: ≈79.7°F

L: ≈46.9°F

🌇 7:48 p.m.

Thu. September 3  

🌅 6:44 a.m.

H: ≈79.4°F

L: ≈46.6°F

🌇 7:46 p.m.

Fri. September 4  

🌅 6:45 a.m.

H: ≈79.0°F

L: ≈46.2°F

🌇 7:44 p.m.

Sat. September 5  

🌅 6:46 a.m.

H: ≈78.7°F

L: ≈45.9°F

🌇 7:42 p.m.

Sun. September 6  

🌅 6:47 a.m.

H: ≈78.3°F

L: ≈45.5°F

🌇 7:41 p.m.

Mon. September 7 Labor Day  

🌅 6:48 a.m.

H: ≈77.9°F

L: ≈45.2°F

🌇 7:39 p.m.

Tue. September 8  

🌅 6:50 a.m.

H: ≈77.5°F

L: ≈44.8°F

🌇 7:37 p.m.

Wed. September 9  

🌅 6:51 a.m.

H: ≈77.2°F

L: ≈44.5°F

🌇 7:36 p.m.

Thu. September 10  

🌅 6:52 a.m.

H: ≈76.8°F

L: ≈44.1°F

🌇 7:34 p.m.

Fri. September 11  

🌅 6:53 a.m.

H: ≈76.4°F

L: ≈43.8°F

🌇 7:32 p.m.

Sat. September 12  

🌅 6:54 a.m.

H: ≈76.0°F

L: ≈43.4°F

🌇 7:31 p.m.

Sun. September 13  

🌅 6:55 a.m.

H: ≈75.6°F

L: ≈43.1°F

🌇 7:29 p.m.

Mon. September 14 Holy Cross  

🌅 6:56 a.m.

H: ≈75.2°F

L: ≈42.8°F

🌇 7:27 p.m.

Tue. September 15  

🌅 6:57 a.m.

H: ≈74.9°F

L: ≈42.4°F

🌇 7:25 p.m.

Wed. September 16  

🌅 6:58 a.m.

H: ≈74.5°F

L: ≈42.1°F

🌇 7:24 p.m.

Thu. September 17  

🌅 6:59 a.m.

H: ≈74.1°F

L: ≈41.7°F

🌇 7:22 p.m.

Fri. September 18  

🌅 7:00 a.m.

H: ≈73.7°F

L: ≈41.4°F

🌇 7:20 p.m.

Sat. September 19  

🌅 7:01 a.m.

H: ≈73.3°F

L: ≈41.1°F

🌇 7:18 p.m.

Sun. September 20  

🌅 7:02 a.m.

H: ≈72.9°F

L: ≈40.7°F

🌇 7:17 p.m.

Mon. September 21  

🌅 7:03 a.m.

H: ≈72.5°F

L: ≈40.4°F

🌇 7:15 p.m.

Tue. September 22 Autumn Equinox  

🌅 7:04 a.m.

H: ≈72.1°F

L: ≈40.1°F

🌇 7:13 p.m.

Wed. September 23  

🌅 7:05 a.m.

H: ≈71.7°F

L: ≈39.8°F

🌇 7:11 p.m.

Thu. September 24  

🌅 7:06 a.m.

H: ≈71.3°F

L: ≈39.4°F

🌇 7:10 p.m.

Fri. September 25  

🌅 7:07 a.m.

H: ≈70.9°F

L: ≈39.1°F

🌇 7:08 p.m.

Sat. September 26 🌕

🌅 7:08 a.m.

H: ≈70.5°F

L: ≈38.8°F

🌇 7:06 p.m.

Sun. September 27  

🌅 7:09 a.m.

H: ≈70.1°F

L: ≈38.5°F

🌇 7:04 p.m.

Mon. September 28  

🌅 7:10 a.m.

H: ≈69.7°F

L: ≈38.2°F

🌇 7:03 p.m.

Tue. September 29  

🌅 7:11 a.m.

H: ≈69.3°F

L: ≈37.8°F

🌇 7:01 p.m.

Wed. September 30  

🌅 7:12 a.m.

H: ≈68.9°F

L: ≈37.5°F

🌇 6:59 p.m.


Temperature climatic data from weather station: ROCK SPRINGS FIRE DEPARTMENT (USC00487847)

Precipitation climatic data from weather station: ROCK SPRINGS FIRE DEPARTMENT (USC00487847)

Agricultural climatic data from weather station: BITTER CREEK 4 NE (USC00480761)